diff --git a/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/BuildTimeContentProcessor.java b/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/BuildTimeContentProcessor.java
index 86c18954b1cf2..26177f8ec97a8 100644
--- a/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/BuildTimeContentProcessor.java
+++ b/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/BuildTimeContentProcessor.java
@@ -423,13 +423,14 @@ void createBuildTimeData(BuildProducer<BuildTimeConstBuildItem> buildTimeConstPr
             ExtensionsBuildItem extensionsBuildItem,
             NonApplicationRootPathBuildItem nonApplicationRootPathBuildItem,
             LaunchModeBuildItem launchModeBuildItem,
-            Optional<EffectiveIdeBuildItem> effectiveIdeBuildItem) {
+            Optional<EffectiveIdeBuildItem> effectiveIdeBuildItem,
+            DevUIConfig devUIConfig) {
 
         BuildTimeConstBuildItem internalBuildTimeData = new BuildTimeConstBuildItem(AbstractDevUIBuildItem.DEV_UI);
 
         addThemeBuildTimeData(internalBuildTimeData, themeVarsProducer);
         addMenuSectionBuildTimeData(internalBuildTimeData, internalPages, extensionsBuildItem);
-        addFooterTabBuildTimeData(internalBuildTimeData, extensionsBuildItem);
+        addFooterTabBuildTimeData(internalBuildTimeData, extensionsBuildItem, devUIConfig);
         addVersionInfoBuildTimeData(internalBuildTimeData, curateOutcomeBuildItem, nonApplicationRootPathBuildItem);
         addIdeBuildTimeData(internalBuildTimeData, effectiveIdeBuildItem, launchModeBuildItem);
         buildTimeConstProducer.produce(internalBuildTimeData);
@@ -490,7 +491,7 @@ private void addMenuSectionBuildTimeData(BuildTimeConstBuildItem internalBuildTi
     }
 
     private void addFooterTabBuildTimeData(BuildTimeConstBuildItem internalBuildTimeData,
-            ExtensionsBuildItem extensionsBuildItem) {
+            ExtensionsBuildItem extensionsBuildItem, DevUIConfig devUIConfig) {
         // Add the Footer tabs
         @SuppressWarnings("unchecked")
         List<Page> footerTabs = new ArrayList();
@@ -509,7 +510,7 @@ private void addFooterTabBuildTimeData(BuildTimeConstBuildItem internalBuildTime
         footerTabs.add(testLog);
 
         // This is only needed when extension developers work on an extension, so we only included it if you build from source.
-        if (Version.getVersion().equalsIgnoreCase("999-SNAPSHOT")) {
+        if (Version.getVersion().equalsIgnoreCase("999-SNAPSHOT") || devUIConfig.showJsonRpcLog) {
             Page devUiLog = Page.webComponentPageBuilder().internal()
                     .namespace("devui-jsonrpcstream")
                     .title("Dev UI")
diff --git a/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/DevUIConfig.java b/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/DevUIConfig.java
index 9b9415a33688d..174a7e17088ff 100644
--- a/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/DevUIConfig.java
+++ b/extensions/vertx-http/deployment/src/main/java/io/quarkus/devui/deployment/DevUIConfig.java
@@ -13,6 +13,12 @@ public class DevUIConfig {
     @ConfigItem(defaultValue = "50")
     public int historySize;
 
+    /**
+     * Show the JsonRPC Log. Useful for extension developers
+     */
+    @ConfigItem(defaultValue = "false")
+    public boolean showJsonRpcLog;
+
     /**
      * CORS configuration.
      */
diff --git a/extensions/vertx-http/dev-ui-resources/src/main/resources/dev-ui/controller/jsonrpc.js b/extensions/vertx-http/dev-ui-resources/src/main/resources/dev-ui/controller/jsonrpc.js
index f17647f35c340..bfd86942f2612 100644
--- a/extensions/vertx-http/dev-ui-resources/src/main/resources/dev-ui/controller/jsonrpc.js
+++ b/extensions/vertx-http/dev-ui-resources/src/main/resources/dev-ui/controller/jsonrpc.js
@@ -249,19 +249,22 @@ export class JsonRpc {
             JsonRpc.webSocket.onmessage = function (event) {
                 var response = JSON.parse(event.data);
                 var devUiResponse = response.result;
-
+                var devUiError = response.error;
                 if (!devUiResponse && response.error) {
                     if (JsonRpc.promiseQueue.has(response.id)) {
                         var saved = JsonRpc.promiseQueue.get(response.id);
                         var promise = saved.promise;
-                        var log = saved.log;
-
                         promise.reject_ex(response);
                         JsonRpc.promiseQueue.delete(response.id);
-                        if (log) {
-                            var jsonrpcpayload = JSON.stringify(response);
-                            JsonRpc.dispatchMessageLogEntry(Level.Error, MessageDirection.Down, jsonrpcpayload);
+                        JsonRpc.log(saved,response);
+                    }else if(JsonRpc.observerQueue.has(response.id)){
+                        var saved = JsonRpc.observerQueue.get(response.id);
+                        var observer = saved.observer;
+                        response.error = devUiError;
+                        if (typeof observer.onErrorCallback === "function") { 
+                            observer.onErrorCallback(response);
                         }
+                        JsonRpc.log(saved,response);
                     }
 
                     return;
@@ -279,16 +282,12 @@ export class JsonRpc {
                     if (JsonRpc.promiseQueue.has(response.id)) {
                         var saved = JsonRpc.promiseQueue.get(response.id);
                         var promise = saved.promise;
-                        var log = saved.log;
                         var userData = devUiResponse.object;
                         response.result = userData;
 
                         promise.resolve_ex(response);
                         JsonRpc.promiseQueue.delete(response.id);
-                        if(log){
-                            var jsonrpcpayload = JSON.stringify(response);
-                            JsonRpc.dispatchMessageLogEntry(Level.Info, MessageDirection.Down, jsonrpcpayload);
-                        }
+                        JsonRpc.log(saved,response);
                     } else {
                         JsonRpc.dispatchMessageLogEntry(Level.Warning, MessageDirection.Down, "Initial normal request not found [ " + devUiResponse.messageType + "], " + event.data);
                     }
@@ -296,14 +295,10 @@ export class JsonRpc {
                     if (JsonRpc.observerQueue.has(response.id)) {
                         var saved = JsonRpc.observerQueue.get(response.id);
                         var observer = saved.observer;
-                        var log = saved.log;
                         var userData = devUiResponse.object;
                         response.result = userData;
                         observer.onNextCallback(response);
-                        if(log){
-                            var jsonrpcpayload = JSON.stringify(response);
-                            JsonRpc.dispatchMessageLogEntry(Level.Info, MessageDirection.Down, jsonrpcpayload);
-                        }
+                        JsonRpc.log(saved,response);
                     } else {
                         // Let's cancel as we do not have someone interested in this anymore
                         JsonRpc.cancelSubscription(response.id);
@@ -342,4 +337,12 @@ export class JsonRpc {
         const event = new CustomEvent('jsonRPCLogEntryEvent', {detail: logEntry});
         document.dispatchEvent(event);
     }
+    
+    static log(o, response){
+        var log = o.log;
+        if(log){
+            var jsonrpcpayload = JSON.stringify(response);
+            JsonRpc.dispatchMessageLogEntry(Level.Info, MessageDirection.Down, jsonrpcpayload);
+        }
+    }
 }
\ No newline at end of file